body { background-color: #E6E6E6; margin: 0px; }

div { position: relative; }

span.el_menu { display: block; }

#menu {
  float: left;
  width: 20%;
  text-align: center;
  padding-top: 1em;
  }

#tresc {
  padding-left: 1em;
  float: left;
  width: 78%;
  border-left: 3px solid black;
  }